# Basic definitions to start- Waves

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• Created by: Lilli1997
• Created on: 03-06-15 12:13
What is a progressive wave?
A wave whose oscillations travel. This type of wave transfers energy.
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Define frequency.
The number of wave cycles that pass a point each second.
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What is frequency measured in?
Hertz (Hz)
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Define amplitude.
The maximum displacement of a particle in a wave from its equilibrium position
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Define wavelength.
Distance between two adjacent points in phase in a wave
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Define period.
The time for one complete wave (cycle) to pass a point
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What is a transverse wave?
Waves whose oscillations are perpendicular to the direction of energy transfer
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What is a longitudinal wave?
Waves whose oscillations are parallel to the direction of energy transfer
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When two waves are half a wavelength apart they are in...
anti phase
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What do you call it when the oscillations of a transverse wave are restricted to one plane?
polarization
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Why is polarization used in sunglasses?
reduces glare
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When two waves with similar properties but travelling in opposite directions meet in phase you get...
constructive interference
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When two waves with similar properties but travelling in opposite directions meet in anti phase you get...
destructive interference
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Define stationary wave.
Fixed pattern of vibration where no energy is transferred along the wave
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A point on a stationary wave where there is no displacement is called a...
node
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A point on a stationary wave where there is maximum displacement is called a...
antinode
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## Other cards in this set

### Card 2

#### Front

The number of wave cycles that pass a point each second.

#### Back

Define frequency.

Hertz (Hz)

### Card 4

#### Front

The maximum displacement of a particle in a wave from its equilibrium position

### Card 5

#### Front

Distance between two adjacent points in phase in a wave